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OpenPET(2): Development of a Small Prototype for a Proof-of-Concept
https://repo.qst.go.jp/records/64011
https://repo.qst.go.jp/records/64011574313f1-8794-4df1-96e5-23d863342a6d
| Item type | 会議発表用資料 / Presentation(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2010-09-21 | |||||
| タイトル | ||||||
| タイトル | OpenPET(2): Development of a Small Prototype for a Proof-of-Concept | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_c94f | |||||
| 資源タイプ | conference object | |||||
| アクセス権 | ||||||
| アクセス権 | metadata only access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
| 著者 |
Yoshida, Eiji
× Yoshida, Eiji× et.al× 吉田 英治 |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Objectives: We have proposed an OpenPET geometry which consists of two axially separated detector rings. The open gap would be suitable for in-beam PET, which is a method for in situ monitoring of charged particle therapy. In this work, we developed the first prototype of an OpenPET, especially for in-beam experiments using phantoms. The OpenPET prototype was designed with 2 detector rings of 8 detector blocks. The ring diameter was 110 mm and the minimum axial field-of-view was 99 mm. The distance between detector rings could be controlled. The DOI detector consisted of 784 LGSO crystals which were arranged in 4 layers of 14 x 14 arrays, coupled to a 64-ch FP-PMT. Each crystal element was 2.9 x 2.9 x 5 mm3. Front-end circuits were separated from the detector head by 1.2 m coaxial cables. Front-end circuits were set under the detector rings and surrounded by lead and paraffin shields. Results: The system sensitivities were measured from a 22Na point source. The system sensitivity without the open gap was 7.2 %. On the other hand, the system sensitivity with open gap was maintained at 5.8 %. The count rate performance test utilized an 8-cm cylinder phantom. The maximum count rate of the prompt was 29 kcps at 0.1mCi. We carried out 11C irradiation experiment at HIMAC using the small OpenPET prototype. The small OpenPET prototype was able to successfully obtain full 3D images under the in-beam experiment. Conclusions: The OpenPET prototype has promise of higher sensitivity and performance for in-beam experiments. | |||||
| 会議概要（会議名, 開催地, 会期, 主催者等） | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | Japanese-European joint symposium on ion cancer therapy and NIRS-KI joint symposium on ion-radiation sciences | |||||
| 発表年月日 | ||||||
| 日付 | 2010-09-11 | |||||
| 日付タイプ | Issued | |||||
